MySQL Proxy

Abstract

The MySQL Proxy is an application that communicates over the
network using the MySQL client/server protocol and provides
communication between one or more MySQL servers and one or more
MySQL clients. Because MySQL Proxy uses the MySQL client/server
protocol, it can be used without modification with any
MySQL-compatible client that uses the protocol. This includes
the mysql command-line client, any clients
that uses the MySQL client libraries, and any connector that
supports the MySQL network protocol.